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MPA2.OUT <br />---------------------------------------------------------------------------- <br />----------------------------------------- <br />ELEVATION DATA: UPSTREAM(FEET) = 142.00 DOWNSTREAM(FEET) = 139.10 <br />FLOW LENGTH(FEET) = 878.00 MANNING'S N = 0.013 <br />DEPTH OF FLOW IN 30.0 INCH PIPE IS 15.8 INCHES <br />PIPE -FLOW VELOCITY(FEET/SEC.) = 4.78 <br />GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1 <br />PIPE-FLOW(CFS) = 12.50 <br />PIPE TRAVEL TIME(MIN.) = 3.06 Tc(MIN.) = 11.25 <br />LONGEST FLOWPATH FROM NODE 110.00 TO NODE 114.00 = 1772.00 FEET. <br />+ + <br />DA-A2 <br />+ + <br />FLOW PROCESS FROM NODE 114.00 TO NODE 114.00 IS CODE = 82 <br />>>>>>ADD SUBAREA RUNOFF TO MAINLINE, AT MAINLINE Tc,<<<<< <br />>>>>>(AND COMPUTE INITIAL SUBAREA RUNOFF)<<<<< <br />---------------------------------------------------------------------------- <br />INITIAL SUBAREA FLOW-LENGTH(FEET) 100.00 <br />ELEVATION DATA: UPSTREAM(FEET) = 156.50 DOWNSTREAM(FEET) = 154.50 <br />Tc = K*[(LENGTH** 3.00)/(ELEVATION CHANGE)]**0.20 <br />SUBAREA ANALYSIS USED MINIMUM Tc(MIN.) = 5.000 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 2.264 <br />SUBAREA Tc AND LOSS RATE DATA(AMC II): <br />DEVELOPMENT TYPE/ <br />SCS SOIL AREA <br />Fp Ap <br />SCS Tc <br />LAND USE <br />GROUP <br />(ACRES) <br />(INCH/HR) (DECIMAL) <br />CN (MIN.) <br />COMMERCIAL <br />B <br />1.31 <br />0.30 0.100 <br />56 5.00 <br />SUBAREA AVERAGE PERVIOUS <br />LOSS <br />RATE, Fp(INCH/HR) <br />= 0.30 <br />SUBAREA AVERAGE PERVIOUS <br />AREA <br />FRACTION, <br />Ap = 0.100 <br />SUBAREA AREA(ACRES) = <br />1.31 <br />INITIAL <br />SUBAREA RUNOFF(CFS) = <br />2.63 <br />** ADD SUBAREA RUNOFF TO MAINLINE AT MAINLINE Tc: <br />MAINLINE Tc(MIN.) = 11.25 <br />* 2 YEAR RAINFALL INTENSITY(INCH/HR) = 1.422 <br />SUBAREA AREA(ACRES) = 1.31 SUBAREA RUNOFF(CFS) = 1.64 <br />EFFECTIVE AREA(ACRES) = 9.60 AREA -AVERAGED Fm(INCH/HR) = 0.03 <br />AREA -AVERAGED Fp(INCH/HR) = 0.30 AREA -AVERAGED Ap = 0.10 <br />TOTAL AREA(ACRES) = 9.6 PEAK FLOW RATE(CFS) = 12.50 <br />NOTE: PEAK FLOW RATE DEFAULTED TO UPSTREAM VALUE <br />FLOW PROCESS FROM NODE 114.00 TO NODE 115.00 IS CODE = 41 <br />Page 5 <br />